Breech-loading bolt-gun



(No Model.) v 2 Sheets. Sheet 1.

W. D. RBES, BREEGH L0 G BOLT GUN;

No. 466,779. Patented Jan. 12, 1892.

(No Model.) 2Sheets-Sheet 2.

.- w. D. FORBES;

BREEGH LOADING BOLT GUN.

No. 466,779. Patented Jan. 12, 1892.

WIT/VESS'ES:

ATTORNEYJ" i V UNITED STATES PATENT ()F IC WVILLIAM D. FORBES, OF MORRISTOINN, NEIV JERSEY.

BREECHI-LOADING BOLT-GUN.

SPECIFICATION forming part of Letters Patent No. 466,779, dated Jannary 12, 1892, Application filed December 30, 1890. Serial No. 376,286. (No model.)

breech-loading arms have more particularly reference to the construction and combina tion of devices for imparting motion to and locking the breech-bolt and for locking the extractor upon the cartridge-shell in withdrawing the latter.

In the accompanying drawings, Figure 1 is a side View of my improved rapid-firing breech-loading arm with part of the barrel out ofi. Fig. 2 is a similar side view showing the rotating piece with the locking-segment, the connecting-rod, and the breech-bolt in different positions from those in which they appear in Fig. 1. Fig. 3 is a plan view. Fig. 4 is a sectional plan view. Fig. 5 is a perspective view illustrating the part of the handled rotating piece with the locking-segment and with the trigger, these parts being detached from their surroundings. Fig. 6 is a perspective View of the breech-bolt and extractor detached. Fig. 7 view of the roller-gate, and Fig. 8 is a perspective View of that end of the connectingrod which connects with the breech-bolt.

The barrel A is screwed into the frame or receiver B, which has on the other end the cap-piece D, containing the spring 5 to act upon the firingpin 3, which in turn is contained within the reciprocating breechbolt 2. The latter carries at its front end the rigid and springless but laterally moving cartridge extractor 4. The handled rotating piece h, which may be termed the rotating operating-handle, is mounted on the pivotpin m of the detachable part of the receiver, which I term the pin-slide 0, this pivotpin being substantially at right angles to the axis of the bolt. To this pin-slide is also piv oted the trigger 6, engaging with the firingpin 3 when the latter is drawn back with the bolt, and this trigger is acted upon to release the firing-pin by means of a projection 0, Fig. 5, carried by the rotary handle h.

To impart the necessary linear reciprocatis a perspective ing motion to the sliding breech-bolt 2, I use a connecting-rod K, connected to a crank-pin 19 on the rotary handle and at the opposite end connected with the bolt 2,but with intermediate lost motion. For this purpose the outer end of the connecting-rod K has an elongated slot or recess 7;, within which is contained the laterally-projecting lugVupon the bolt, the slot being in thepresent instance about twice as long as the diameter of the lug V. The object of thislost motion 'is to enable the bolt to remain in its forward locked position, in which it is held by the locking-segment w on thehandle during that part of the revolution of the rotating piece or handle during which this looking-segment is in engagement with the locking-bolt.

For the purpose of locking the cartridge-ex tractor4 upon the rim of the cartridge during the backward movement ofthe breech-bolt a ,notch y is-formed in the edge of the extended arm of the extractor, and corresponding notches are formed on the front side of the lug V of the bolt, while a pin or projection is, carried by the connecting-rod K within the slot is, is adapted to enter these notches in the lug V of the bolt andin the cartridgeextractor to preventlateral movement of the latter when the connecting-rod is drawing the breech-bolt back again.

In an application for a patent filed by me December 30, 1890, Serial N 0. 376,285, I have shown a fire-arm with a rotary handle 71-, carrying a dovetailed segment wtoengage with dovetailed notches or recesses in the side of the frame or receiver to lock the breech-bolt to the frame through the lug iv when the breech-bolt was closed. In my present invention I so construct the breech-bolt that the locking-segment 10 will engage directly with the breech-bolt as well as the frame. For this purpose a shoulder S is formed upon the bolt to project through the side opening b of the frame or receiver, and the rear edge 8 of this shoulder is beveled to correspond with the bevel on the forward edge on the lockingsegment and the incline of the dovetailed notches in the frame. The connecting-rod K cannot carry the bolt quick enough to the end of its forward motion to avoid the contact of the segment h and the shoulder S. So

the advance edge of the rotating segment at m, Fig. 2, is madeon a somewhat smaller curve than the rest of the locking-edge of the segment to form a cam-like advance edge. As the segment enters the notches in the frame or receiver this cam-edge wcomes into contact with the rear edge 8 of the shoulder S of the breech-bolt and pushes the latter home, or to its extreme forward position, and holds it there locked by the engagement of the locking-segment w with the notches in the frame and With the bolt and until the rotary .handle, as it is turned, carries the segment out of engagement with the breech-bolt.

The operation of my fire-arm will be readily understood Without further explanation.

I do not herein claim the general features of construction, as they form the subject of my above-mentioned application for patent, Serial No. 376,285, for a fire-arm, on which the fire-arm of the present invention is an improvement.

I claim as my invention 1. The combination of the receiver or frame of the breech-loading fire-arm and its breechbolt with a rotary handle havinga crank-pin and mounted on a pivot at right angles to the axis of the bolt, and a "connecting rod connecting the breech-bolt with a crank-pin on the rotary handle, substantially as-described.

2. In a breech-loading fire-arm, the combination of the receiver or frame and breechbolt with a rotary handle having a crank pin, and a connectingrod connecting the said crank-pinof the rotary handle with the breechbolt to operate the latter, with a lost motion in the connecting-rod, as and for the purpose set forth.

3. In a breech-loading fire-arm, the combination of the frame or receiver and breechbolt with a rotary handle having a crank-pin, a connecting-rod connecting the crank-pin with the breech-bolt, a laterally-moving cartridge-extractor, and a device carried by the connectingrod to lock the extractor upon the cartridge-shell during the rearward move ment of the breech-bolt.

4-. In a breech-loading fire-arm, the combination of the frame or receiver and breechbolt havingalaterally-projectin g lug with a rotary handle having a crank-pi n, and a con necting-rod pivoted to the latter and having an elongated slot engaging with the lug on the breech-bolt, substantially as and for the purpose set forth.

5. In a breech-loading fire-arm, the combination of the frame or receiver and breechbolt having a notched laterally-proj ectin g lug and a notched cartridge-extractor carried thereby with a rotary handle havinga crankpin, a connecting-rod pivoted at one end to the crank-pin and having at the other end an elongated slot to engage with the lug, and a projection to engage with the notches on the lug and extractor, substantially as set forth.

6. In a breech-loading fire-arm, the combination of a frame or receiver and breechbolt with a rotary operating-handle for the breech-bolt, and a locking-segment carried by the rotary handle and engaging 'with both the breech-bolt and the frame or receiver to lock the bolt in its closed position.

7. In a breech-loading fire-arm, the combination of the frame or receiver and a breechb'olt having a laterally-proje'ctin g shoulder with a rotary handle carrying a locking-segment to engage with the shoulder on the bolt and with notches on the frame or receiver to lock the bolt in its closed position, substantially as described.

8. In a breech-loading fire-arm, the eo1nbination of the frame or receiver and breechbolt with an operating-handle for the latter, having a crank-pin and carrying a lockingsegment to lock the bolt to the frame, and a connecting-rod connecting the crank-pin on the rotating handle with the breech-bolt, with a lost motion in the connecting-rod, substantially as and for the purposes described.

'9. In a breech-loading fire-arm, the combination of the frame or receiver having notches on the edge and a breech-bolt having a laterally-projecting shoulder with a rotary operating-handle for the breech-bolt to impart a reciprocating motion to the latter, the said handle having a dovetailed locking-segment to engage with the shoulder on the bolt and notches on the frame, the forward acting edge of the locking-segment being made cam-like to complete the forward movement of the breech-bolt, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

. WILLIAM D. FORBES.

Witnesses:

EDITH J. GRIsWoLD, JOHN REVELL.

IOC 

